AWS Lambda连接到Internet [英] AWS Lambda connecting to Internet

问题描述

我正在尝试从AWS Lambda连接到互联网，我有一个带有NAT网关的私有子网，但该功能仍然无法连接到互联网。 ..

I am trying to connect to internet from AWS Lambda, I have a private subnet with a NAT Gateway but still the function cannot connect to internet...

所以我尝试使用我的AWS Lambda函数访问互联网。我已经尝试了Java和NodeJS 4而没有运气。

So I am trying to access internet with my AWS Lambda function. I have tried both Java and NodeJS 4 with no luck.

我有一个带子网的私有VPC：10.0.10.0/24

I have a private VPC with a subnet: 10.0.10.0/24

如您所见，我已将规则添加到我的NAT网关：

As you can see I have added a rule to my NAT Gateway:

我将AWS Lambda配置为：

I configured my AWS Lambda like this:

选择该子网（10.0.10.0）并使用对所有事物都开放的安全组（入站和出站）

Selecting that subnet (10.0.10.0) and with a security group that is open to everything (both inbound and outbound)

但是当我尝试从互联网上下载内容时，lambda次out：

But yet when I try to download something from internet, the lambda times out:

'use strict';
console.log('Loading function');

var http = require("http");

exports.handler = (event, context, callback) => {
    //console.log('Received event:', JSON.stringify(event, null, 2));
    console.log('value1 =', event.key1);
    console.log('value2 =', event.key2);
    console.log('value3 =', event.key3);

    var options = {
      host: 'www.virgilio.it',
      port: 80,
      path: '/'
    };

    http.get(options, function(res) {
      console.log("Got response: " + res.statusCode);
    }).on('error', function(e) {
      console.log("Got error: " + e.message);
    });

    callback(null, event.key1);  // Echo back the first key value
    // callback('Something went wrong');
};

{
errorMessage：2016-05- 10T10：11：46.936Z 79968883-1697-11e6-9e17-1f46a366f324任务在55.00
秒后超时
}

{ "errorMessage": "2016-05-10T10:11:46.936Z 79968883-1697-11e6-9e17-1f46a366f324 Task timed out after 55.00 seconds" }

这是一个错误吗？

注意：相同的功能有效如果我没有选择我的VPC

推荐答案

我发现错误，应该将NAT网关添加到公有子网（不是私有子网）。

A公有子网是与 0.0.0.0/0相关联的Internet Gatway路由的子网

I found the error, the NAT Gateway should be added to a public subnet (not a private one).
A public subnet is the subnet with the Internet Gatway route associated to 0.0.0.0/0

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